The change will involve relocating the comms teams for Prince Charles, currently based in Clarence House, and his sons, currently based in Kensington Palace, to join the Queen’s team at Buckingham Palace.

The unified operation will be led by Prince Charles’ comms secretary Sally Osman and she is expected to report to the Queen’s private secretary Sir Christopher Geidt.

The merger will be the first time in a generation that all the royal family’s comms teams will be working together in the same office.

According to a Buckingham Palace source the change will prevent members of the royal family competing with each other for coverage in the media, when high-profile engagements are carried out on the same day.

The Queen’s comms team will be headed by James Roscoe while the Duke and Duchess of Cambridge and Prince Harry’s team will continue to be headed by Ed Perkins.